/*
 * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
 * under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership. Camunda licenses this file to you under the Apache License,
 * Version 2.0; you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

'use strict';

module.exports = [
  'Variables',
  function(Variables) {
    return {
      require: 'ngModel',
      link: function(scope, element, attrs, ngModel) {
        function parseText(text) {
          var variable;

          try {
            variable = Variables.parse(text);
          } catch (e) {
            // ok, failed to parse variable
          }

          ngModel.$setValidity('processVariableFilter', !!variable);
          return variable;
        }

        ngModel.$parsers.push(parseText);
        ngModel.$formatters.push(Variables.toString);
      }
    };
  }
];
